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[[West Africa]] > [[Republic of Guinea]] > [[Diécké Classified Forest]]

[[West Africa]] > [[Republic of Guinea]] > [[Diécké Classified Forest]]

= Summary =  <!-- An overview of the site, with a one sentence overview of each of the following sections. can include a site map -->

= Summary =  <!-- An overview of the site, with a one sentence overview of each of the following sections. can include a site map -->

* Western chimpanzees ([https://www.iucnredlist.org/species/15935/17989872 ''Pan troglodytes verus'']) are present in Diécké Classified Forest.

* Western chimpanzees (''Pan troglodytes verus'') are present in Diécké Classified Forest.

* It has been estimated that 80 (CI: 25-253) individuals occur in the forest.

* It has been estimated that 80 (CI: 25-253) individuals occur in the forest.

* The chimpanzee population trend is unknown.  

* The chimpanzee population trend is unknown.  

Diécké is a forest in southern Guinea close to the border with Liberia (7°39'N - 7°21'N and 9°06'W - 8°47'W) and was designated as a Classified Forest in 1945 (IUCN category not reported, [https://www.protectedplanet.net/diecke-classified-forest UNEP-WCMC and IUCN 2018]). The forest is located in Guinée forestière, one of four Guinean natural regions, and is part of the region N'Zérékoré. It is about 100km west of Bossou and 950 km from the Guinean capital Conakry (Carvalho 2011). The forest has a size of 640 km², 70% of which are dense forest and the remainder being sparsely forested areas, fallows, and open land ([http://www.wildchimps.org  WCF 2012]). Diécké forest has a rich biodiversity with hippopotamus (''Hippopotamus amphibius''), duikers, and several primate species, including chimpanzees (WCF 2012). It is also listed as an Important Bird Area and harbors several species of plants and amphibians. Together with Ziama forest, this is one of the last remaining large forest blocks in southern Guinea. The terrain is partly hilly and ranges in altitude from 50-800m (Carvalho 2012).  

Diécké is a forest in southern Guinea close to the border with Liberia (7°39'N - 7°21'N and 9°06'W - 8°47'W) and was designated as a Classified Forest in 1945 (IUCN category not reported, [https://www.protectedplanet.net/diecke-classified-forest UNEP-WCMC and IUCN 2018]). The forest is located in Guinée forestière, one of four Guinean natural regions, and is part of the region N'Zérékoré. It is about 100km west of Bossou and 950 km from the Guinean capital Conakry (Carvalho 2011). The forest has a size of 640 km², 70% of which are dense forest and the remainder being sparsely forested areas, fallows, and open land ([http://www.wildchimps.org  WCF 2012]). Diécké forest has a rich biodiversity with hippopotamus (''Hippopotamus amphibius''), duikers, and several primate species, including chimpanzees (WCF 2012). It is also listed as an Important Bird Area and harbors several species of plants and amphibians. Together with Ziama forest, this is one of the last remaining large forest blocks in southern Guinea. The terrain is partly hilly and ranges in altitude from 50-800m (Carvalho 2012).  

 

'''Table 1. Basic site information for Diécké Classified Forest'''

'''Table 1: Basic site information for Diécké Classified Forest'''

{| border="1" cellpadding="5" cellspacing="0" class="basic-information"

{| border="1" cellpadding="5" cellspacing="0" class="basic-information"

| Area            <!-- Please include units: km2/ha e.g 200ha    -->

| Area            <!-- Please include units: km2/ha e.g 200ha    -->

|-

|-

| Coordinates

| Coordinates

|7.54 N, 8.94 W

|7.54, -8.94

|-

|-

| Designation      <!-- National Park, Nature Reserve, etc.  -->

| Designation      <!-- National Park, Nature Reserve, etc.  -->

|Subtropical/tropical moist lowland forest  

|Subtropical/tropical moist lowland forest  

|}

|}

[http://www.unitar.org/hiroshima/sites/unitar.org.hiroshima/files/Annex%201%20-%20IUCN%20Classification%20Schemes.pdf IUCN habitat categories]  [[Site designations]]

[https://www.iucnredlist.org/resources/habitat-classification-scheme IUCN habitat categories]  [[Site designations]]

= Ape status =  <!-- a text overview of ape status (population sizes, trends etc), followed by a table of specific surveys and results -->

= Ape status =  <!-- a text overview of ape status (population sizes, trends etc), followed by a table of specific surveys and results -->

Based on a nation-wide questionnaire survey, the presence of western chimpanzee was confirmed by Sugiyama & Soumah (1988). In a nationwide survey Rebecca Kormos identified Ziama Biosphere Reserve as the second most important priority area for western chimpanzee conservation in Guinea due to high chimpanzee densities encountered during reconnaissance surveys (Ham 1998). A nationwide survey by the Wild Chimpanzee Foundation estimated the chimpanzee population size at around 80 individuals (WCF 2012).  

Based on a nation-wide questionnaire survey, the presence of western chimpanzee was confirmed by Sugiyama & Soumah (1988). In a nationwide survey Rebecca Kormos identified Ziama Biosphere Reserve as the second most important priority area for western chimpanzee conservation in Guinea due to high chimpanzee densities encountered during reconnaissance surveys (Ham 1998). A nationwide survey by the Wild Chimpanzee Foundation estimated the chimpanzee population size at around 80 individuals (WCF 2012).  

 

'''Table 2. Great ape population estimates in Diécké Classified Forest'''

'''Table 2: Great ape population estimates in Diécké Classified Forest'''

{| border="1" cellpadding="5" cellspacing="0" class="population-estimate-table"

{| border="1" cellpadding="5" cellspacing="0" class="population-estimate-table"

! Species

! Species

! Year

! Year

! Abundance estimate (95% confidence interval)

! Abundance estimate (95% CI)

! Density estimate (per km²)

! Density estimate [ind./ km²] (95% CI)

! Encounter rate (nests/km)

! Encounter rate (nests/km)

! Area

! Area

Illegal poaching represents the major threat to the chimpanzee population in the park (WCF 2012, Ham 1998). More than 500,000 immigrants migrated to this area beginning in 1989 from Sierra Leone and Liberia resulting in a strong increase in illegal logging (Carvalho 2011). There was also an increase in plantations of oil palm, rubber, and crops (Carvalho 2011).

Illegal poaching represents the major threat to the chimpanzee population in the park (WCF 2012, Ham 1998). More than 500,000 immigrants migrated to this area beginning in 1989 from Sierra Leone and Liberia resulting in a strong increase in illegal logging (Carvalho 2011). There was also an increase in plantations of oil palm, rubber, and crops (Carvalho 2011).

 

'''Table 3. Threats to great apes in Diécké Classified Forest'''

'''Table 3: Threats to great apes in Diécké Classified Forest'''

{| border="1" cellpadding="5" cellspacing="0" class="threats-table"

{| border="1" cellpadding="5" cellspacing="0" class="threats-table"

!align="left"|Category  <!-- Do not change threat categories -->

!align="left"|Category  <!-- Do not change threat categories -->

|-

|-

|2. Agriculture & aquaculture

|2. Agriculture & aquaculture

|2.1. Annual & Perennial Non-Timber Crops

|2.1 Annual & perennial non-timber crops

|High

|High

|0.30 signs of agriculture/km (43 signs of agriculture, survey effort: 144.853 km, WCF 2012)

|0.30 signs of agriculture/km (43 signs of agriculture, survey effort: 144.853 km, WCF 2012)

|-

|-

|4. Transportation & service corridors

|4. Transportation & service corridors

|4.1. Roads & railroads

|4.1 Roads & railroads

|Medium

|Medium

|1.26 roads/km (182 roads, survey effort: 144.853 km, WCF 2012)

|1.26 roads/km (182 roads, survey effort: 144.853 km, WCF 2012)

|-

|-

|5. Biological resource use

|5. Biological resource use

|5.1. Hunting & collecting terrestrial animals

|5.1 Hunting & collecting terrestrial animals

|High

|High

|1.45 signs of hunting/km (210 signs of hunting, survey effort: 144.853 km, WCF 2012)

|1.45 signs of hunting/km (210 signs of hunting, survey effort: 144.853 km, WCF 2012)

|-

|-

|

|

|5.3. Logging & wood harvesting

|5.3 Logging & wood harvesting

|Present

|Present

|0.05 signs of wood extraction/km (7 signs of wood extraction, survey effort: 144.853 km, WCF 2012)

|0.05 signs of wood extraction/km (7 signs of wood extraction, survey effort: 144.853 km, WCF 2012)

|Logging increased strongly when migrants arrived from Sierra Leone and Liberia in 1989 (Carvalho 2011). Signs of logging and charcoal production were found in a survey in 2011 (WCF 2012)

|Logging increased strongly when migrants arrived from Sierra Leone and Liberia in 1989 (Carvalho 2011). Signs of logging and charcoal production were found in a survey in 2011 (WCF 2012)

|Ongoing (2011, 2012)

|Ongoing (2012)

|-

|-

|6. Human intrusions & disturbance

|6. Human intrusions & disturbance

The Centre Forestier de N'Zérékoré is responsible for Diécké Classified Forest. In the 1990’s the forest was divided into three land-use zones, the outer two allowing for different degrees of human activities, while the core of the forest was designated a ‘integrally protected area’ (WCF 2012). After 2000 Progerfor (the Projet de Gestion des Ressources Forestières), a cooperation between Centre Forestier de N'Zérékoré  and German partners, conducted conservation activities, including reforestation and monitoring of illegal hunting (Carvalho 2011).  

The Centre Forestier de N'Zérékoré is responsible for Diécké Classified Forest. In the 1990’s the forest was divided into three land-use zones, the outer two allowing for different degrees of human activities, while the core of the forest was designated a ‘integrally protected area’ (WCF 2012). After 2000 Progerfor (the Projet de Gestion des Ressources Forestières), a cooperation between Centre Forestier de N'Zérékoré  and German partners, conducted conservation activities, including reforestation and monitoring of illegal hunting (Carvalho 2011).  

 

'''Table 4. Conservation activities in Diécké Classified Forest'''

'''Table 4: Conservation activities in Diécké Classified Forest'''

{| border="1" cellpadding="5" cellspacing="0" class="conservation-actions-table"

{| border="1" cellpadding="5" cellspacing="0" class="conservation-actions-table"

!align="left"|Category  <!-- Do not change threat categories -->

!align="left"|Category  <!-- Do not change threat categories -->

[[Conservation activities list (Junker et al. 2017)]]

[[Conservation activities list (Junker et al. 2017)]]

= Impediments = <!-- Overview of impediments to ape conservation -->

= Challenges = <!-- Overview of impediments to ape conservation -->

'''Table 5: Impediments reported for Diécké Classified Forest'''

'''Table 5. Challenges reported for Diécké Classified Forest'''

{| border="1" cellpadding="5" cellspacing="0" class="impediments-table"

{| border="1" cellpadding="5" cellspacing="0" class="impediments-table"

!align="left"|Impediment  <!-- Do not change categories -->

!align="left"|Challenge <!-- Do not change categories -->

!Source  <!-- source for impediment mentioned -->

!Source  <!-- source for impediment mentioned -->

|-

|-

'''Table 6: Great ape behaviors reported for Diécké Classified Forest'''

'''Table 6. Great ape behaviors reported for Diécké Classified Forest'''

{| border="1" cellpadding="5" cellspacing="0" class="behaviors-table"

{| border="1" cellpadding="5" cellspacing="0" class="behaviors-table"

!align="left"|Behavior  <!-- Do not change categories -->

!align="left"|Behavior  <!-- Do not change categories -->

|}

|}

= References =

= References =

'''Page completed by:''' A.P.E.S. Wiki Team '''Date:''' 15/11/2018  <!-- If you don't want to add your name, you can add "A.P.E.S. Wiki team" -->

'''Page completed by:''' A.P.E.S. Wiki Team '''Date:''' 15/11/2018  <!-- If you don't want to add your name, you can add "A.P.E.S. Wiki team" -->

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